Bit-cleaner



Patented IFeb. 17, 1920.

2 SHEETS-SHEET l.

BIT CLEANER.

APPLICATION FILED OCT. 2l 1.918.

S. ROBICHAUX.

y s. HOBIC'HAUX.

BlT CLEANER.

APPLICATION FILED 0CT.2. 19.1.8.

'Patented Feb.17,1920.

2 SHEETS-SHEET 2.

luvwto'z www unirsi) srarns ATENT 'ltFCE SOSTI-IENE ROBICHAUX, .0F SARATOGA, TEXAASSIGN-GR OF ONE-HALF TO A. W.

Y ROARK, OFy HARDIN COUNTY, TEXAS.

To all lwhom 1f-may concern.'

Beit known 'thatlL SOSTHENE Rorcnaux, a citizen ofthe United States, residin at Saratoga, inthe county'of- Hardin and tate of f Texas, have invented certain new and useful -us'ed in-drilling wells'. In drilling wells, a

drill stem is commonly employed which is rotated by means of arotary, from the ground surface, and to thelower end of this stem, a drill bit is attached. 1n drilling,

certain formations through which the bit passes have a. tendency to adhere to the bit, 20'

and obstruct the drillingprocess.- It is the object ofl this invention to provide van attachment which will automatically eleanthe bit, and remove the adhering formation,

. without the necessity of withdrawing the bit to 'clean the same.

Another object ofthe inventionis 'to provide' an attachment of the character described, which will be automatically operated by the water which isL forced down through the `drillstem to the point; ofthe bit, to carry away the' cuttings. Y

Another featureof the invention resides in the provision offa device of the character described, which is simple in construction and operation, and which maybeireadily applied to the drill stem,

With the above and vother objects in view, the'invention has particular relation to certain novel features of construction, operation and arrangement of parts, an example of which is givenV in this specification and illustrated in the accompanying drawings, wherein:

Figure 1, is a vertical sectional view of the upper part of the device, showing the operative mechanism.

Fig. 2, is a vertical sectional view of the lower end of the stem, showing the bit attached thereto, and the cleaning blades.

Fig. 3, is a vertical sectional view of the upper part of the device, taken at right angles to the View shown in Fig. 1.

Fig. 4, is a vertical sectional'view of the lower part of the stemftaken at right angles to the view shown in Fig. 2.

BIT-CLEANER.

Specification of Letters Patent.

" YAppiimifm med october 21, 191s. serial No. 259,115.

lon the line 7 7 of Fig. 1.

Fig. 8, is al transverse sectional view taken on theline 8-8 ofvFig. 1, and Fig. 9, is a bottom view of the device.

Referring now more particularly to the drawings, wherein like numerals of reference designate similar parts in each of the figures, the numeral 1, refers to a drill stem, the lower end of which is formed of a short tubular section 2, which is connected to the stem by means of a collar 3. Within the upper end of the'section 2,y isa small turbine i, which has the vertical drive shaft" 5 connected thereto. This drive shaft has a bearing inthe stuffing box 6, which is carried by the transverse partition'y 7, of the section 2, and the lower end of this shaft has a bevel gear 8, fixed thereon, which is in mesh with a corresponding bevel gear 9, fixed on the transverse shaft 10.l This last mentioned shaft is operativ/'ely connected with `and drives the crank shaft 11 through an inter mediate train of'gears 12. The crank shaft has a wrist pin 13, and a connecting rod 14 is provided., one end of which is pivoted to the wrist .pin 13, and the other end of which isfpivcted to a cross head 15, which reciprocates within the section 2.4 The lower end of the section 2, is closed by means of the partition 16', and the mechanism betweenthe partitions 7 and 1.6,' thus operates in a'closed chamber, which is filled with oil, whereby the mechanism therein is lubricated. The partition 16 has stuffing box 17, through which the rod 1S operates. The upper end cf this rod has a resilient cushion 19, against which it operates, and is provided for a purpose hereinafter to be explained.

To the lower end of the section 2, a nipple 20 is attached by means of the collar 21, and the lower end of this nipple has a collar 22, to which the drill bit 23 is attached. The lower end of the collar 22 is internally threaded, and the drill bit has an externally threaded shank which is screwed thereon, thus forming a means of attaching the bit 28 to the collar 22. A Ushaped member is provided, having the arms 24, 24. This member is attached to the lower end of the rod 18, and its arms extend through opposing vertical grooves 25, 25,111 the threaded end of the collar V22, and the lower ends. of these Yrespective arms have the cleaning blades 26, 26, secured thereto, which fitV against opposing sides of the bit, and are reciprocated up and downto clean off said bit-during` the drilling process. The lower ends of thesek arms. are connected by means of a` transverse pin .27, which extends f through a bit.

In drilling, water is vertical slot 28, cut-through the the cuttings; rihis water is. forced through the stemunder pressure, and operates to ro- A.tate the turbine A.. rlhis rotation isitransinittedgthrough the shaft 5, and the pinions 8. and- 9, and the train of gearsl 12 to the crank shaft 11,l which, in turn, reciprocates the cross head 15 through the connecting rod 14, thus'operatingthrough the rod 18,

and, the varms y241, 24, to ieciprocatethe Y scraper blades 26,26, for` cleaningthe bit. .Y

. 4Incase, a rock orhard'stratum is encounteredagainst which Vthe blades 26,26, contact,A the yieldable seat A19 is compressed,

1 .thus permitting,- said blades vto yieldrin Yorder yto prevent the breaking of the same.V

Y vThe entire device may bereadily removed Aby"iiiiscrewing tlie'section 2 from thek collar 8, and an ordinaryv section of stem and bit may be substituted therefor when the formation is such as not to ldemand the use of the attachment hereindescribed.

` VWhatl claim is: 1 l

1. A vdevice of the character described, including a drill stem, having albit attached to the lower end thereof, scrapeivblades 'carf y ried by the bit, and means carried by the stein for reciprocating said blades.

-2. kA device of the` character described, in-

cluding a ldrill stem, a bit carried by the K lower end thereof, reciprocatingmembers carried-.by the bit and provided-for freeing 'the bit from earth adhering thereto,'and a mechanism "carried bythe stem'v Vfor autof matically reciprocating said members.V Y

. 3. A device oftliecharacter described, including a' drill stem, a ,bit carried, by the lowei rvend thereof, reciprocating members carried by the bit,and a mechanism adapted to be operated bythe fluid passing through the said stem to.reciprocate` said members.

4; Adeviceof--the character described, in- `1 cluding va drillstem,f ai bit carried by the lower' end thereof, reciprocating scraper bladesYV carried by-f-the bit, a turbine within the stem, and provided. to be operated by the fluid passing' `under` pressure, through said stem, and a mechanism actuated by said turbine, and operatively connected Ywith said fblades and reciprocating the blades..

5. A device Yofthe. character described, in-

' cluding` a tubular sectionvadapted'tovbesecured to 4the lowerendV of a' `drills tem, `a

drill bit attached tothe lower endof said member, *Scrapers V carried, by the bit,I a lmechanism within said section, loperatively connected to said Scrapers'andeactuatingthe same. p .f-f Y Y Y 6.` A device of the character descr1bed,'in

cluding, atubular section adaptedto Ybe attached to the lower end of a` drill stem,YV a.-

toV

drill bit attached tothe lower end of said Y section, reciprocating scraperbladescarried by said bit, a turbine withinsaid section, a

mechanism operated by saidYV turbine and operativelyconnected `to said scraper blades throughv which the rotation 5 of the turbine is effective to impart `reciprocating movement to said scraper blades. i

' In. tGStIIlOlly. whereof Ihavesigned myV f name to this specification in the' presence of two. subscribing witnesses.

As'osriiniaii noBioHAUX.

Witnessesi 'f i.

" T. L. 'BURNETT', i f VJ.` MCNEIL. i 

